On Mon, Jul 9, 2018 at 4:24 PM Michael Ellerman <m...@ellerman.id.au> wrote: > > Because the allmodconfig logic just sets every symbol to M or Y, it > has the effect of always generating a 64-bit config, because > CONFIG_PPC64 becomes Y. > > So to make it easier for folks to test 32-bit code, provide a phony > defconfig target that generates a 32-bit allmodconfig. > > The 32-bit port has several mutually exclusive CPU types, we choose > the Book3S variants as that's what the help text in Kconfig says is > most common.
Ok then. > Signed-off-by: Michael Ellerman <m...@ellerman.id.au> > --- > arch/powerpc/Makefile | 5 +++++ > arch/powerpc/configs/book3s_32.config | 2 ++ > 2 files changed, 7 insertions(+) > create mode 100644 arch/powerpc/configs/book3s_32.config > > diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile > index 2ea575cb3401..2556c2182789 100644 > --- a/arch/powerpc/Makefile > +++ b/arch/powerpc/Makefile > @@ -354,6 +354,11 @@ mpc86xx_smp_defconfig: > $(call merge_into_defconfig,mpc86xx_basic_defconfig,\ > 86xx-smp 86xx-hw fsl-emb-nonhw) > > +PHONY += ppc32_allmodconfig > +ppc32_allmodconfig: > + $(Q)$(MAKE) > KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \ > + -f $(srctree)/Makefile allmodconfig > + I this a good time to update line 34 at the same time: KBUILD_DEFCONFIG := $(shell uname -m)_defconfig ? > define archhelp > @echo '* zImage - Build default images selected by kernel config' > @echo ' zImage.* - Compressed kernel image > (arch/$(ARCH)/boot/zImage.*)' > diff --git a/arch/powerpc/configs/book3s_32.config > b/arch/powerpc/configs/book3s_32.config > new file mode 100644 > index 000000000000..8721eb7b1294 > --- /dev/null > +++ b/arch/powerpc/configs/book3s_32.config > @@ -0,0 +1,2 @@ > +CONFIG_PPC64=n > +CONFIG_PPC_BOOK3S_32=y > -- > 2.14.1 >
